Question

topic5 d4 assessment periodic table
16 of 42

1. elements in the same group have the same

number of valence electrons.
energy level of outer electrons.
nuclear charge.
atomic radius.

Explanation:

Elements in the same group (vertical column) of the periodic table have the same number of valence electrons. This is a fundamental property of the periodic table's group structure. For example, Group 1 (alkali metals) all have 1 valence electron. The energy level of outer electrons increases as you go down a group. Nuclear charge (number of protons) increases down a group. Atomic radius also increases down a group due to more electron shells.

Answer:

number of valence electrons.